Flue-expander.



J. B. STRAUSER.

FLUE EXPANDER.

APPLICATION FILED 0GT.10, 1911.

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JOHN B. STRAUSER, 0F ALTOONA, PENNSYLVANIA.

FLUE-EXPANDER.

Specification of Letters Patent.

Patented Sep t. ,2, 1 913.

Application filed October 10, 1911. Serial No. 653,931.

To all whom 2f may conce/rn.'

Re it known that I, JOHN B. S'rnAUsnn, a citizen oit' the United States,residing' at Altoona, in the county of Blair and State of Pennsylvania,have invented certain new and useful Improvements in Flue-Expanders, ofwhich the following is a specification.

This invention relates to flue expanders, wherein rollers are caused toengage the inside surface of the flue and expand the same outward,making the flue tight in the flue sheet.

The primary object of the invention is to provide a flue tool having anintegral frame cooperating with a plurality of steel rollers adapted tobe held in place by steel bands, thus making the tool simple, readilytaken apart and easily maintained.

Another object of the device is to provide means for allowing therollers to freely fall toward the center of the frame, when the rollerbar is taken out.

A further object of the device is to provide means for keeping the toolstraight, the axis of the tool being perpendicular to the flue sheetinto which the flue is being rolled, and at the same time having meansfor keeping the flue rollers parallel with the tlue when the same is inuse.

`With these and many other objects in view, which will be more readilyapparent as the nature of the invention is better understood, the sameconsists of the novel eonstruction, combination and arrangement ofparts, as will be hereinafter fully pointed out, illustrated andclaimed.

The essential features of the invention involved, in carrying out theobjects above mentioned, are susceptible of a wide range of struetu'almodification without departing from the spirit'or scope of theinvention, but a preferred and practical embodiment thereof is shown inthe accompanying drawings, in which:

Figure l is an end elevation of my improved. t'lue roller, showing therollers and the roller bar in position. Fig. 2 is a side elevation ofthe parts shown in F ig. 1. Fig. 3 is a side elevation of the tlueroller frame. Fig. 4 is a cross section oit' the roller frame, taken online Ll-l of Fig. 3. Fig. 5 is a side elevation view of one of the steelrollers. Fig. 6 is a plan view of the top end of one of the steelrollers. Fig. 7 is a top View of one of the retaining rings. Fig. 8 is aSide elevation thereof. Fig. 9 is a bottom plan View of the ferrule.Fig. l0 is a longitudinal sectional view of the 'terrnle showing theanti-friction washer in position. Fig. 1l is a bottom plan view of thelille guard. Fig. 12 is a sectional view of the same. Fig. 1 3 is anelevation o'l" the dowel pin, and Fig, lll is an end view thereoil".

Like reference numerals designate corresponding parts throughout theseveral tigures o't the drawings.

This improved Ilne roller designated in its entirety by the numeral l0,essentially con sists of a traine 11, provided with a central opening12, a plurality of spaced segments or posts 13, between which rollersllloccupy a spaced relation, also journals 15, engaging the notches 1G,in the frame ll, said rollers lll being held in operative relation by.the spring retaining rings 17, adapted to ht 1n the grooves 1S in thetraine, as clearly illustrated in Fig. 3 of the drawings.

This improved tool :further consists of a roller bar 1t), adapted topass through the opening 12 and engage the rollers lst, and torce thesaine out radially, as shown in Fig. 1, oit the drawings.

In order to insure the rollers engaging the flue with their properrelation, a flue guard 34 is provided, having a central opening 20,through which the solid stem 2l of the 'traine protrudes, a recess 22which receives the collar 23, thus keeping the parts in operativerelation. The guard 34; is further provided with a plurality ott spacedsegmental legs 2t, the inside face 25 oi. which is adapted to restagainst the face of the liuc sheet, into which the tlue is being rolled.

In order to keep the trame, together with the rollers, from entering themouth of the flue too far :tor the proper rolling ojt the `flue, theferrule 26 is provided, haring a rc Cess 27 into which is titted the'friction ring 28, which bears against the lace 2f) of the flue guard34. This friction ring is pret erably made of hard brass, or material ofsimilar nature.

The ferrule 2G is locked to the traine 1l by the dowel pin 80, whichpasses through the hole 3l of the ferrule and a hole B2 ot likediameter, located on the top otl the stem 21.

The rings 1.7, which hold the rollers in position are preferably made otsteel, the ends feathered and lett't unweldcd to provide means forplacing' the saine in posit ion.

The operation o't" this flue expander may be described as follows: Thepoint 33 or" the traine is placed in the mouth of the flue, ande theface 25 of the flue guard made to rest against the face of the fluesheet, afteruvhich.

the roller'bar 19 is placed in position. vThe placing of the roller bartends to force the rollers outagains't the inside face of the flue;

the bar being tapered'anch-likewise;the-rollers, naturally the furtherthe bar enters'th'e' frame, the further the rollers: rotate ,outL

. ward,.forcing the flue out against the llue l rying framehav-inglafcentral Abore extending throughout its length, ,the body'ofWhich is provided Wit-h circumferential grooveswhose bottoms f .havenotches, spaced,v apart segmental posts formedy between said grooves andparallel to the axis of the frame, a stein portion of the frame, acollar for-ined at the junction of the latter With the body of theJframe, rollers located between the spaced n apart posts and havingjournals bearing in said notches, spring retaining rings fitting in thegrooves inthe frame body to hold the v-rollers-inposition, a flue guardfitted over Athe stein portion and having a circular recess receivingthe collartbetvveen-the body and stein ott-he frame, a err-.ule .havingay centraly opening'- and a circular` recess on its botytoni face. adjacent fthereto, a ring ot' i, :antisaid, :ferrule boing@ fitted over`:the vstern and lockedlthereto soithat'the ,anti-friction ring abutsagainst the frear zfacel of the flue g'uard,;and a 'roller bar extendingv.through the central bore of 4the* frame Ator,-orci=ng therollersoutwardly.

In testimony'vvhereof I hereunto aflixa iny signature iny the: presenceof two witnesses.

i .JOHN B. ISIRAUSER.

Witnesses i E. Gnu,

THEO. D. CRAWFORD.

.-Copies of .this patent-.maybevobtained for ve `cents each,- byaddressingthef Cvmlmissioner o'f Patents,

i.. Washington, D. C.

.frictionv'niaterial fitted Withinsaid .recess7

